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CLEANUP: tinfo: move sched_*_date/*_mono_time to the thread-local area 

These ones are never atomically accessed, they have nothing to do in
the atomic ops cache line, let's move them to the thread-local area.
This commit is contained in:
Willy Tarreau 2024-11-19 18:00:47 +01:00
parent 8dc68f3c75
commit 973c81ceec
1 changed files with 11 additions and 7 deletions
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18
include/haproxy/tinfo-t.h
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@ -152,7 +152,16 @@ struct thread_ctx {
void **emergency_bufs; /* array of buffers allocated at boot. Next free one is [emergency_bufs_left-1] */
uint emergency_bufs_left; /* number of emergency buffers left in magic_bufs[] */
// around 36 bytes here for thread-local variables
uint32_t sched_wake_date; /* current task/tasklet's wake date in 32-bit ns or 0 if not supported */
uint32_t sched_call_date; /* current task/tasklet's call date in 32-bit ns */
// 4 bytes hole here
uint64_t prev_mono_time; /* previous system wide monotonic time (leaving poll) */
uint64_t curr_mono_time; /* latest system wide monotonic time (leaving poll) */
// around 8 bytes here for thread-local variables
// third cache line here on 64 bits: accessed mostly using atomic ops
ALWAYS_ALIGN(64);
@ -164,12 +173,7 @@ struct thread_ctx {
uint flags; /* thread flags, TH_FL_*, atomic! */
uint active_checks; /* number of active health checks on this thread, incl migrated */
uint32_t sched_wake_date; /* current task/tasklet's wake date or 0 */
uint32_t sched_call_date; /* current task/tasklet's call date (valid if sched_wake_date > 0) */
uint64_t prev_cpu_time; /* previous per thread CPU time */
uint64_t prev_mono_time; /* previous system wide monotonic time */
uint64_t curr_mono_time; /* latest system wide monotonic time */
struct eb_root rqueue_shared; /* run queue fed by other threads */
__decl_thread(HA_SPINLOCK_T rqsh_lock); /* lock protecting the shared runqueue */
@ -183,7 +187,7 @@ struct thread_ctx {
unsigned long long total_streams; /* Total number of streams created on this thread */
unsigned int stream_cnt; /* Number of streams attached to this thread */
// around 44 bytes here for shared variables
// around 68 bytes here for shared variables
ALWAYS_ALIGN(128);
};